>> there was always a bevy of people surrounding them. it would seem like no matter where they went people enjoyed talking to them, being with them. >> reporter: and they were often seen hobnobbing with top military brass, including general david petraeus, connections jill kelley made while volunteering to organize social events at nearby macdill air force base. >> she is just a deep down good person, her and her family. >> reporter: jill kelley's brother, david quam, who lives in the philadelphia area where she grew up, is rushing to his sister's defense. this, after federal authorities announced they're investigating thousands of e-mails between kelley and marine commander john allen. quam says they are only friends. >> all i do know is my sister didn't do anything wrong, nad i know that from talking to her. and i know she's a victim, and i don't know what else to tell you. >> reporter: the kelleys have asked for privacy and did not return our calls. they have hired high-powered washington attorney abbe lowell.